diff --git a/core/generator.js b/core/generator.js
index b5a794959..fc7471b7d 100644
--- a/core/generator.js
+++ b/core/generator.js
@@ -274,7 +274,10 @@ Blockly.Generator.prototype.valueToCode = function(block, name, outerOrder) {
 };
 
 /**
- * Generate code representing the statement.  Indent the code.
+ * Generate a code string representing the blocks attached to the named
+ * statement input. Indent the code.
+ * This is mainly used in generators. When trying to generate code to evaluate
+ * look at using workspaceToCode or blockToCode.
  * @param {!Blockly.Block} block The block containing the input.
  * @param {string} name The name of the input.
  * @return {string} Generated code or '' if no blocks are connected.